Sometimes after I pop a pimple, and I know it has been fully expressed (a little blood comes out), the day after, a white head forms on top of it, but its not regular pus. After I express it, it seems ball-shaped and semisolid, unlike regular pus which is a thick liquid; after being expressesed, a little hole stays, and it takes a few days for it to fully close.

So, my question for you guys with similar experiences: What do you think that is? Could it be white blood cells fighting off the remaining infection? Should I remove it, or let it be?

I'm partial to removal because I've read a few people say white blood cells destroy all cells in the infected area, even healthy ones, which might leave a permanent hole.

BTW, my acne was caused by Candida. I've been treating that, and as of right now I only have one blemish with these charactersitics, hyperpigmentation and some mild scarring.